Hydrometer-syringe



UNITED STATES PATENT OFFICE.

EINAR NEERUP, OIE .CHICAGO, ILLINOIS.

HYDROMETER-SYRINGE.

T0 aZl whom c't may concem:

Be it known that I, EINAR NEERUP,. a citizen of the United States of America, and a resident of Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Hydrometer- Syringes, of which the following is a spacification.

This invention relates to hydrometer syringes or chargometers employed in testing the specific gravity of the acid charges of storage batteries and the like uses, and the present improvement has 'for its object To provide a structural formation and association of parts whereim a substantial and effective connection is attained between the transparent view cylinder and the suction bulb and the inlet-outlet neck or tube et the appliance, and with which a choking of said inlet-outlet passage by the lower end of the hydrometer, is effectively prevented, all as Will hereinafter more fully appear.

In the accompanying drawings Figure 1, is a side elevation illustrating the general arrangement of parts in the present invention.

Fig. 2, is an enlarged central section of the upper portion of the appliance.

Fig. 3, is a similar view of the lower portion of the appliance.

Fig. 4, is a horizontal section on line 4-4: Fig. 3.

Like reference numerals indicate like parts in the several views.

Referring to the drawing, 1 designates the hollow cylindrical casing of the appliance, formed of glass or like transparent material and provided with annular beads or enlargements 2 at its respective ends.

3 designates a hydrometer arranged for.

vertical movement within the casing 1, as nsual in the present class of appliances.

4 designates the upper or suction head of the appliance, usually of the ordinary rubber bulb type shown and which in the present improvement is connected to the upper end of the casing 1 by a construction as foltion of the connecting nipple hereinafter desoribed, and having a depending skirt portion 7 adapted to embrace the upper end of the transparent casing 1. 8 designates an annularrecess formed at Spcification of Letters Patent.

Patented J uly 12, 1921.

the uppenend of the cavity of the aforesaid sk1rt port1on 7 for the reception of and engagement Wlth the upper head or enlargement 2 of the casing 1 aforesaid. r

9 desi nates an upwardly extending circular r 1m orming an integral part of the body port1on 5 of the upper cap piece, With its cav1ty adapted to receive the lower end or geck 4013 the suction bulb 4 as illustrated in 10 designates the. tubular shank of a connectmg n1pple adapted to fit the central orifice 6 foresaid, and having at its lower end an annular stop flange 11 and at its upper and an enlargement 12, preferably ,of the pear shape shown in.Fig. 2, for engagement 111 the bore of the lower end portion 01' neck of the suction bulb 4:.

13 designates the body portion of a lower cap piece of rubber or like elastic material,

formed with a central inletoutlet passage and having an upwardly extending skirt',

, gagement with the lower head or enlargement 2 of the casing 1, afdresaid.

16 designates a plurality of radial ribs formed on the upper surface of the body portion 13 of the lower cappiece, in adjacent relation to the inlet-outlet passage of the same, and adapted to provide abutments for the lower end of the hydrometer 3 and prevent the same from covering and choking sa1d mlet-outlet passage.

17 designates a tubular extension or neck on the aforesaid lower cap piece, adapted for insertion in the liquid to be tested and pro- 1de for a ready introduction of the liquid into the transparent view cylinder 1 in the operatmn of attaining a hydrometric -readmg of the specific gravity of the liquid.

Hav1ng thus fully described my said'in ventmn what I claim as new and desire to secure by Letters Patent is 1. In a hydrometer syringe, the combinat1on of a transparent view casing having a marginal head at top, 3. ca piece of elastic material formed with a sEi rt portion "and w1th an annular recess at the upper end of the cavity of the skirt portion for exigag= ment With the upper beaded end oftheview casmg, suction meajns consisting of.an'elastic hollow bulb, and a connecting maiis be 10 ment with the upper beaded end of the view casing, suction means consisting of an elastic hollow bulb, and connecting means between said cap piece and bulb comprising a nipple having a shank portion, a hollow flange and an expanded top portion, the cap piece having an annular rim at top adapted to inc]ose the lower end of said bu1b.

Signed -at Chicago, Illinois, this 29th day of October, 1920.

EINAR NEERUP. 

